hiding behind the victim label means that you are saying that crap stuff has happened and that is why my life is crap and it is not my fault and certain behaviours become socially acceptable. Just like people take up a sick role when in hospital where it is acceptable to have others do things for you.
It is just an excuse to blame everything on someone else.
Yes, the stuff that happened may have in no way been your fault but how you decide to live afterwards is TOTALLY your choice.

I also think some people are scared to give up their labels and associated behaviors. They have been known as a 'victim' that is their identity. If you aren't a victim anymore, what is left?? Will people stop paying you attention if you are coping really well?